What is a known limitation of decision testing?

It cannot detect faults in the logic of complex conditions with multiple sub-conditions

It cannot be applied to code with loops

It requires too many test cases to be practical for large systems

It only works with white-box testing and not with black-box testing

What is the primary purpose of decision testing?

To test all possible combinations of conditions within a decision

To ensure that every function is called at least once

To verify that every decision point evaluates to both true and false at least once

To execute every statement in the code at least once

Which of the following faults is most likely to go undetected by decision testing?

A missing 'else' branch that is never executed

A variable that is not initialized before use

An incorrect operator in a compound condition, e.g., using 'AND' instead of 'OR'

A statement that is never executed due to a logic error

Certified Tester Advanced Level Technical Test Analyst

Domain 2Objective 3

Decision Testing CTAL-TTA Practice Questions (Page 1)

Part of the Domain 2: White-Box Test Techniques domain, which makes up ~19% of our current practice bank. ISTQB does not publish an official question count, but from its 120-minute exam (~50–80 total, ~10–15 in this domain), expect 1–2 from this objective — we provide 14 practice questions to prepare you well beyond it. (estimate)

14questions here

3free pages

4concepts

Questions 1–5

1application · medium
A Technical Test Analyst is reviewing a login module with the following pseudocode: if (username is valid AND password is valid) then grant access else deny access. The team wants to achieve 100% decision coverage with the minimum number of test cases. How many test cases are required?
Select an answer first
2foundation · easy
What is a known limitation of decision testing?
Select an answer first
3application · medium
A function contains a switch statement with three cases and a default. The switch is based on an integer variable. What is the minimum number of test cases to achieve 100% decision coverage for the switch statement?
Select an answer first
4foundation · easy
What is the primary purpose of decision testing?
Select an answer first
5foundation · easy
Which of the following faults is most likely to go undetected by decision testing?
Select an answer first

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Decision Testing CTAL-TTA Practice Questions (Page 1)

Questions 1–5

A Technical Test Analyst is reviewing a login module with the following pseudocode: if (username is valid AND password is valid) then grant access else deny access. The team wants to achieve 100% decision coverage with the minimum number of test cases. How many test cases are required?

What is a known limitation of decision testing?

A function contains a switch statement with three cases and a default. The switch is based on an integer variable. What is the minimum number of test cases to achieve 100% decision coverage for the switch statement?

What is the primary purpose of decision testing?

Which of the following faults is most likely to go undetected by decision testing?

Keep studying — Domain 2: White-Box Test Techniques